Husqvarna 532406712 Replacement Lawn Mower Blade for 21-inch For Husqvarna/Poulan/Roper/Craftsman/Weed Eater Replacement part for many brands including Husqvarna, Poulan, Poulan Pro, roper, Sears/Craftsman and Weed Eater Current part number 532406712 replaces previous part numbers 165833, 175064, 406712 and 406712X431. 1-Year warranty for defects in material or workmanship; measures 21-inches length, 2 1/4-inches width, 5/8-inches center hole diameter Other measurements 0.130-inches thickness, 5/8-inch diameter of outside hole, 1 7/8-inch diameter of outside hole, cut direction right